Use of a Broken or Risky Cryptographic Algorithm Affecting libtpms package, versions <0.8.2-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-DEBIAN13-LIBTPMS-5685794
  • published19 Mar 2021
  • disclosed25 Mar 2021

Introduced: 19 Mar 2021

CVE-2021-3446  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade Debian:13 libtpms to version 0.8.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libtpms package and not the libtpms package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

A flaw was found in libtpms in versions before 0.8.2. The commonly used integration of libtpms with OpenSSL contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality.

CVSS Base Scores

version 3.1